Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
  • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
  • F16G11/08—Fastenings for securing ends of driving-cables to one another, the fastenings having approximately the same diameter as the cables
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
  • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
  • F16G11/02—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with parts deformable to grip the cable or cables; Fastening means which engage a sleeve or the like fixed on the cable
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
  • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
  • F16G11/10—Quick-acting fastenings; Clamps holding in one direction only
  • F16G11/103—Quick-acting fastenings; Clamps holding in one direction only deforming the cable by bending it around or inserting it into the fastener

Definitions

• the present disclosure relates generally to systems, devices, and methods configured to join a first rope and a second rope.
• Existing rope splice technology includes long splices, short splices, swaged terminations, and spelter sockets using molten metal or a polymer.
• Factors to consider when determining the efficacy of a rope joining technology include ease of installation, strength, fatigue life, ability to inspect, and diametric increase.
• the existing rope splice technologies typically maximizes results in view of one factor while sacrificing results in one or more of the other categories.
• Fig. 1 is a side cross-sectional view of a rope connection system including a first rope, a second rope, and a rope connection device according to one embodiment
• Fig. 2 is a side elevation view of the rope connection device illustrated in
• FIG. 3 is a side elevation view of an enlarged portion of the rope connection device illustrated in Fig. 2;
• Fig. 4 is a side elevation view of a portion of a rope connection system according to another embodiment;
• Fig. 5 is a side elevation view of a portion of a rope connection system according to another embodiment.
• Fig. 6 is a side elevation view of a portion of a rope connection system according to another embodiment.
• a radial or polar coordinate system is provided and described herein.
• the polar coordinate system includes a two dimensional radial plane that is centered on and normal to a reference axis, for instance an axis of elongation or a central axis.
• the words “inner” and “outer” designate locations closer to and farther away from the reference axis respectively.
• a rope connection system 10 (hereinafter the system) is configured to join a first rope 12 to a second rope 14.
• the system 10 may include a plurality of ropes including the first rope 12 and the second rope 14.
• the system 10 may further include a rope connection device 20 (hereinafter the device) configured to join two ropes, for example one of the plurality of ropes to another of the plurality of ropes, or the first rope 12 to the second rope 14.
• the first rope 12 extends along a first rope axis 16, and defines an outer dimension OD 1 measured along a straight line that perpendicularly intersects the first rope axis 16.
• the second rope 14 extends along a second rope axis 18, and defines an outer dimension OD2 measured along a straight line that perpendicularly intersects the second rope axis 18.
• the outer dimensions OD1 and OD2 are substantially equal.
• the plurality of ropes may include ropes with outer dimensions different than OD1 and OD2.
• One or more of the plurality of ropes may include a structure fastened to an end of the rope to prevent fraying of the rope.
• the structure is a rope end cap configured to be installed onto the respective rope prior to inserting the respective rope into the device 20.
• the rope end cap may be configured to be installed on one of the first rope 12 or the second rope 14.
• the rope end cap may be configured to be installed on both the first rope 12 and the second rope 14.
• the rope end cap may be configured to be fastened through crimping, wrapping, adhesives, friction fit, etc.
• the device 20 includes a device body 22 having a first end 24 and a second end 26 spaced apart along a longitudinal direction L.
• the device body 22 defines a length LI measured from the first end 24 to the second end 26 along the longitudinal direction L.
• the device 20 may be elongate along the longitudinal direction L.
• the device body 22 include a tubular shape that defines a through hole 28 that extends through the device body 22.
• the through hole 28 may extend along a device central axis 30.
• the device body 22 includes an inner surface 32, which faces the device central axis 30, and the device body 22 further includes an outer surface 34, which faces away from the device central axis 30.
• the inner surface 32 is positioned radially inward of the outer surface 34 with respect to the device central axis 30.
• the device body 22 defines an inner dimension ID1 measured from a first point 36 on the inner surface 32 to a second point 38 on the inner surface 32 along a straight line 40 that both intersects and is perpendicular to the device central axis 30.
• the inner dimension ID 1 may be an inner diameter.
• the device body 22 defines an outer dimension OD3 measured from a first point 37 on the outer surface 34 to a second point 39 on the outer surface 34 along a straight line 41 that both intersects and is perpendicular to the device central axis 30.
• the outer dimension OD3 may be an outer diameter.
• the device body 22 is configured to be such that the length LI, the inner dimension ID1, or both may change in response to a force applied to the device body 22.
• the device body 22 may be configured such that a "pull" force Fl applied to both the first end 24 in a direction away from the second end 26, and to the second end 26 in a direction away from the first end 24 increases the length LI, decreases the inner dimension ID1, or both.
• the device body 22 may be configured such that a "push" force F2 applied to both the first end 24 in a direction toward the second end 26, and to the second end 26 in a direction toward the first end 24 decreases the length LI, increases the inner dimension ID1, or both.
• the device body 22 may include a plurality of members 42, for example wires or wire strands.
• the plurality of members 42 may be wound at an angle relative to the device central axis 30.
• Each of the plurality of members 42 terminates at opposed first and second strand ends.
• Each of the first strand ends may be mechanically connected to each other, for example by a ring member. Additionally or alternatively, each of the second strand ends may be mechanically coupled together.
• each of the first strand ends may be spaced apart from and unconnected with the others of the first strand ends.
• the device body 22 may be monolithic.
• the system 10 may include an outer sleeve 50 configured to fit over top of the device 20 when the first rope 12 and the second rope 14 are positioned in the through hole 28.
• the outer sleeve 50 may be configured to increase friction between the device 20 and the first and second ropes 12, 14.
• the outer sleeve 50 may further be configured to decrease wear of the device 20, for example as the device 20 passes through sheaves and pulleys.
• the outer sleeve 50 includes an outer sleeve body 52 that, similar to the device body 22, is configured to be flexible such that a length of the outer sleeve 50, an inner dimension ID2 of the outer sleeve 50, or both are variable in response to a force applied to the outer sleeve 50.
• the outer sleeve body 52 may be configured such that in a relaxed state, with no outside force applied to the outer sleeve 50, the inner dimension ID2 is smaller than the inner dimension ID 1.
• the outer sleeve body 52 may be configured such that the length of the outer sleeve 50 is greater than the length LI .
• the outer sleeve body 52 may be configured such that the length of the outer sleeve body 52 is either less than or equal to the length LI .
• the outer sleeve 50 is a shrink tube.
• the outer sleeve 50 is a helical wire, as shown in Fig. 4 with a partial cutout of the wire to provide visibility of the underlying elements.
• the device 20 may include a structure, such as a device end cap 60 attached to an end of the device body 22.
• the device end cap 60 may be configured to be connected to a respective one of the plurality of ropes after insertion of the respective one of the plurality of ropes into the through hole 28. Connection of the device end cap 60 to the respective rope may prevent accidental release of the respective rope from the device 20.
• the device end cap 60 may be configured to be crimped, adhered, or otherwise attached to the respective rope.
• the device 20 may include two device end caps 60, a first device end cap attached to the first end 24 and a second device end cap attached to the second end 26.
• the first device end cap may be configured to be connected to a first rope inserted into the through hole 28, and the second device end cap may be configured to be connected to a second rope inserted into the through hole 28.
• the device 20 may include a device end cap 60 having a biasing member 62, such as a spring.
• the biasing member 62 may be loaded with an initial force prior to connection of a second device end cap 60 to one of the plurality of ropes such that the spring is configured to maintain tension on the device body 22 and re-center the respective rope in the through hole 28 if relative slippage occurs.
• the device end cap 60 can include a first member 64 configured to be fastened to the first rope 12 such that movement of the first member 64 relative to the first rope 12 is restricted, for example prevented without plastically deforming at least one of the first member 64 and the first rope 12.
• the device end cap 60 can further include a second member 66 coupled to the plurality of members 42.
• the device end cap 60 can include the biasing member 62 positioned between the first member 64 and the second member 66.
• the device 20 can include two of the device end caps 60 with the first member 64 of one of the device end caps 60 configured to be fastened to the first rope 12, and the first member 64 of another of the device end caps 60 configured to be fastened to another rope of the system 10.
• the device 20 can be configured such that once both device end caps 60 are fastened, the biasing member 62 applies a force on the second member 66 biasing the second member 66 toward the first member 64 thereby increasing the length LI of the device 20 and decreasing the inner diameter ID 1 of the device 20.
• the decreased inner diameter ID 1 can result in an increased force on the plurality of ropes within the through hole 28, thereby preventing removal of the plurality of ropes from the through hole 28.
• the device 20 may define an assembled
• the device 20 defines an assembled configured in which a portion, for example the first end 13, of the first rope 12 is positioned in the through hole 28, a portion, for example the first end 15 of the second rope 14 is positioned in the through hole 28, and the inner dimension ID1 is greater than both the first outer diameter OD1 of the first rope 12 and the outer diameter OD2 of the second rope 14.
• the device 20 is configured such that the device 20 will maintain the joining of the first rope 12 and the second rope 14 up to a maximum force. Maintaining the joining of the first rope 12 and the second rope 14 includes preventing plastic deformation of the device 20, movement of either or both of the first end 13 and the first end 15 from the through hole 28, or both. According to one embodiment, the device 20 may be configured such that the maximum force is about 75% of the maximum tensile strength of one of the first rope 12 and the second rope 14. According to one embodiment, the device 20 may be configured such that the maximum force is about 100% of the maximum tensile strength of one of the first rope 12 and the second rope 14.
• the outer diameter OD3 of the device body 22 is between about 100% and 125% of the outer diameter OD1 of the first rope 12, and is between about 100% and 125% of the outer diameter OD2 of the second rope 14.
• the system 10 may include friction enhancements such as an inner sleeve positioned in the through hole 28, for example against the inner surface 32, such that the inner sleeve is between the inner surface 32 and one or more of the ropes positioned in the through hole 28.
• the inner sleeve may include rubber, polymer, organic material, or any combination thereof.
• the device body 22 may include a high friction coating such as composite diamond coatings, electroless nickel silicon carbide, or other similar substances.
• the device body 22 may include a visual indicator showing the location of the center of the device body 22 between the first end 24 and the second end 26.
• the device body 22 may include an inner wall that extends from the inner surface 32 toward the device central axis 30, such that the inner wall is configured to provide a hard stop during the insertion of the rope into the through hole 28.
• the inner wall may be configured to block a portion, up to an entirety of the through hole 28 with respect to the longitudinal direction L.
• the system 10 is configured to join a first rope 12 to a second rope 14.
• a first end 13 of the first rope 12 is inserted into the through hole 28 and advanced until the first end 13 is positioned between the first end 24 and the second end 26 with respect to the longitudinal direction L, for example near a center of the device body 22.
• a first end 15 of the second rope 14 is inserted into the through hole 28 and advanced until the first end 15 is positioned between the first end 24 and the second end 26 with respect to the longitudinal direction L, for example near a center of the device body 22.
• the first end 13 and the first end 15 may be abutting, or may face each other such that a gap is defined between them.
• an entirety of the first rope 12 is offset from an entirety of the second rope 14 with respect to the longitudinal direction L.
• no portion of the first rope 12 overlaps with any portion of the second rope 14 with respect to the longitudinal direction L.
• the first end 13 and the first end 15 may be positioned within the through hole 28 such that the first rope axis 16 and the second rope axis 18 are aligned, or in other words collinear.
• a force may be applied to the device body 22 to increase the inner dimension ID 1 from a first size to a second size.
• the first size may be smaller than the outer diameter of the first and second ropes OD1, OD2, and the second size may be larger than the outer diameters of the first and second ropes OD1, OD2.
• the force may be removed from the device body 22 allowing the inner dimension ID1 to reduce from the second size.
• the inner dimension ID1 may reduce to the first size, or may reduce until the inner dimension ID1 matches at least one of outer dimension OD 1 of the first rope 12 and the outer dimension OD2 of the second rope 14.
• any force applied to either or both of the first rope 12 and the second rope 14 in a direction away from the other of the first rope 12 and the second rope 14 results in the length LI of the device body 22 increasing and the inner diameter ID1 decreasing, thus increasing the friction force holding the first and second ropes 12, 14 in place within the through hole 28.
• a kit includes a plurality of ropes and at least one of the devices 20 configured to join a first of the plurality of ropes to a second of the plurality of ropes.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Ropes Or Cables (AREA)

Priority Applications (2)

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Publications (1)

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Citations (6)

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• 2018
  • 2018-09-19 US US16/135,781 patent/US10781885B2/en active Active
  • 2018-09-19 EP EP18859397.4A patent/EP3685073A4/en active Pending
  • 2018-09-19 WO PCT/US2018/051819 patent/WO2019060460A1/en active Search and Examination
  • 2018-09-19 CN CN201880073944.8A patent/CN111712652B/zh active Active

Patent Citations (6)

Non-Patent Citations (1)

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